/*-
* Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_SF_SYNC_H_
#define _SYS_SF_SYNC_H_
typedef enum {
SF_STATE_NONE,
SF_STATE_SETUP,
SF_STATE_RUNNING,
SF_STATE_COMPLETED,
SF_STATE_FREEING
} sendfile_sync_state_t;
struct sendfile_sync {
struct mtx mtx;
struct cv cv;
struct knlist klist;
uint32_t flags;
uint32_t count;
int32_t xerrno; /* Completion errno, if retval < 0 */
off_t retval; /* Completion retval (eg written bytes) */
sendfile_sync_state_t state;
};
/* XXX pollution */
struct sf_hdtr_kq;
extern struct sendfile_sync * sf_sync_alloc(uint32_t flags);
extern void sf_sync_syscall_wait(struct sendfile_sync *);
extern void sf_sync_free(struct sendfile_sync *);
extern void sf_sync_try_free(struct sendfile_sync *);
extern void sf_sync_ref(struct sendfile_sync *);
extern void sf_sync_deref(struct sendfile_sync *);
extern int sf_sync_kqueue_setup(struct sendfile_sync *, struct sf_hdtr_kq *);
extern void sf_sync_set_state(struct sendfile_sync *, sendfile_sync_state_t, int);
extern void sf_sync_set_retval(struct sendfile_sync *, off_t, int);
#endif /* !_SYS_SF_BUF_H_ */
